JP2008097924A - Vehicular lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture capable of improving appearance of the lighting fixture. <P>SOLUTION: This vehicular lighting fixture is constituted by including a light source, a light guide body 3 to guide light of this light source, and a lens to diffuse the light passing through this light guide body 3. Then, the light guide body 3 has a first light guide part 31 to guide parallel beam from the light source to the other end part 3b from one end part 3a of the light guide body 3, a light reversing part 32 to reverse the advancing direction of the parallel beam from this first light guide part 31, a second light guide part 33 to guide the parallel beam from this light reversing part 32 toward one end part 3a from the other end part 3b of the light guide body 3, and a light reflecting part 34 to reflect the parallel beam in this second light guide part 33 and emitting the reflected light outside the second light guide part 33. Moreover, the first light guide part 31 and the second light guide part 33 have a nearly uniform wall thickness t. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that can improve the appearance of the lamp.

  In general, in a vehicular lamp, there is a problem that the appearance of the lamp should be improved by making the light emission state at the time of lighting uniform.

  The technique described in patent document 1 is known for the conventional vehicle lamp regarding this subject. Conventional vehicular lamps (vehicle lighting and signaling devices) have a diffused area where light propagating inside diffuses locally toward the outside, a reflective area where light is reflected, or both areas At least one light source that irradiates a light guide having a part of the surface thereof, and reflecting means for reflecting light back into the guide, and at least one guide spaced apart from the light source. In the lighting and cueing device for automobiles provided with an end face part, the reflecting means hits a trihedral consisting of three squares in a state of being totally reflected one after another, and produces three continuous reflections of the light rays, The light guide material comprises at least one right-angled corner, each facet projecting outward, so that the light rays return in the guide substantially parallel to the initial direction of incidence, or at least One of said right-angled corner portion, so that incident light back in the guide, two facets, characterized in that it comprises at least one beveled corner protruding outward.

JP 2006-80069 A

  Here, the installation space of the vehicular lamp may be restricted depending on the vehicle body shape (curve or inclination of the body line) of the vehicle. In such a case, for example, when a pair of vehicle lamps are installed in the vehicle, the arrangement configuration of the light source and the light guide in these vehicle lamps is symmetrical to each other. Then, the lighting state of these vehicular lamps when lighting is different, and the appearance of the lamps may be deteriorated.

  Accordingly, the present invention has been made in view of the above, and an object thereof is to provide a vehicular lamp that can improve the appearance of the lamp.

  In order to achieve the above object, a vehicle lamp according to the present invention is a vehicle lamp including a light source, a light guide that guides light from the light source, and a lens that diffuses light that has passed through the light guide. The light guide then guides parallel light from the light source from one end of the light guide to the other end, and progress of parallel light from the first light guide A light reversing unit that reverses the direction, a second light guiding unit that guides parallel light from the light reversing unit toward the one end from the other end of the light guide, and in the second light guiding unit A light reflecting portion that reflects parallel light and emits the light to the outside of the second light guide portion, and the first light guide portion and the second light guide portion have a substantially uniform thickness. And

  In this vehicular lamp, parallel light from the light source is guided from one end 3a of the light guide to the other end 3b via the first light guide, and the traveling direction is set to approximately 180 degrees at the light reversing unit. Invert. And this parallel light is guide | induced toward the one edge part 3a from the other edge part 3b of a light guide via the 2nd light guide part, and injects in the light reflection part in the middle. In such a configuration, although the light source is disposed on the one end 3a side of the light guide, the light source is on the other end 3b of the light guide (on the opposite side to the side on which the light source is disposed). The lamp emits light as if it is arranged on the (end) side. Therefore, for example, when the installation space of the lamp is restricted by the shape of the vehicle body (curve or inclination of the body line), the light emission state of the lamp (from the outside) is selected while selecting the positional relationship between the light source and the light guide. Can be adjusted. Thereby, there exists an advantage which the external appearance property of a lamp improves. Moreover, there is an advantage that the degree of freedom regarding the arrangement of the light sources is expanded.

  The vehicular lamp according to the present invention includes a light source, a light guide that guides light from the light source, and a lens that diffuses light that has passed through the light guide, and includes a light source for the light guide. A pair of vehicular lamps arranged symmetrically to each other, wherein the light guide of one of the vehicular lamps emits parallel light from the light source from one end of the light guide to the other A first light guide portion that leads to an end portion, a light inversion portion that reverses the traveling direction of parallel light from the first light guide portion, and the other end portion of the light guide body that emits parallel light from the light inversion portion A second light guide part that leads from the first light guide part to one end part, a light reflection part that reflects parallel light in the second light guide part and emits the light to the outside of the second light guide part, and The first light guide part and the second light guide part have a substantially uniform thickness.

  In this vehicular lamp, the light source is located on the side opposite to the actual arrangement (on the one end 3a side) (on the other end 3b side) with respect to the light guide by the action of the light guide described above. The lamp emits light. For this reason, both the vehicle lamps emit light as if the arrangement of the light source and the light guide is the same (same side) between the vehicle lamps. Thereby, the light emission state of one vehicle lamp and the light emission state of the other vehicle lamp are made uniform, and there is an advantage that the appearance of the lamp is improved.

  In the vehicular lamp according to the present invention, the first light guide part and the second light guide part have a long shape and are arranged in parallel with the longitudinal direction thereof aligned.

  In this vehicle lamp, since the lamp has a thin structure, there is an advantage that it is easy to arrange the lamp along the vehicle body shape of the vehicle.

  Further, in the vehicular lamp according to the present invention, the light reversing unit includes one or a plurality of first inclined surfaces that guide the parallel light from the first light guide unit, and parallel lights guided by the first inclined surface. And a second inclined surface that is incident on the light reflecting portion.

  In this vehicular lamp, the parallel light from the first light guide portion is guided to the second inclined surface via the first inclined surface of the light inverting portion, and the parallel light is reflected by the second inclined surface to be second. The light enters the light reflecting portion of the light guide portion. As a result, the parallel light from the first light guide part is inverted by approximately 180 degrees and appropriately guided to the light reflecting part. This configuration has an advantage that the light inversion structure is configured with a simple configuration.

  In the vehicular lamp according to the present invention, the relative angle between the second inclined surface and the light reflecting portion is such that the light reflected by the second inclined surface is guided over substantially the entire area of the light reflecting portion. It is prescribed to be.

  In this vehicular lamp, light (particularly, parallel light (controlled light)) is guided to substantially the entire area of the light reflecting section, and the entire area of the light reflecting section is utilized, so that the light emission state of the lamp is improved. There is.

  Further, in the vehicular lamp according to the present invention, the relative angle between the second inclined surface and the light reflecting portion is such that the light reflected by the second inclined surface and incident on the light reflecting portion and the light reflecting portion The angle θ formed with the light reflected at is defined as an obtuse angle.

  In this vehicular lamp, the second inclination of the light inverting part is such that the angle θ formed by the light reflected by the second inclined surface of the light inverting part and the light reflected by the light reflecting part becomes an obtuse angle. A relative angle between the surface and the light reflecting portion is defined. As a result, the light from the light reversing unit can be totally reflected by the light reflecting unit, and there is an advantage that it is not necessary to apply a reflection process to the light reflecting unit.

  In the vehicular lamp according to the present invention, the light reflecting portion is constituted by a reflecting prism.

  In this vehicular lamp, since the parallel light (controlled light) in the second light guide part is mainly reflected by the light reflecting part and irradiated to the outside of the lamp, it is easy to make the light emission state of the lamp uniform. There are advantages.

  In the vehicular lamp according to the present invention, the pair of light guides are arranged in parallel.

  In this vehicular lamp, since the light guide has a box-shaped cross section, the structure for fixing the light guide is simplified compared to a configuration in which a light guide having a substantially L-shaped cross section is installed in the vehicle or the lamp. There are advantages to being.

  In the vehicular lamp according to the present invention, the parallel light from the light source is guided from one end 3a of the light guide to the other end 3b via the first light guide, and the traveling direction is changed by the light reversing unit. Invert approximately 180 degrees. And this parallel light is guide | induced toward the one edge part 3a from the other edge part 3b of a light guide via the 2nd light guide part, and injects in the light reflection part in the middle. In such a configuration, although the light source is disposed on the one end 3a side of the light guide, the light source is on the other end 3b of the light guide (on the opposite side to the side on which the light source is disposed). The lamp emits light as if it is arranged on the (end) side. Therefore, for example, when the installation space of the lamp is restricted by the vehicle body shape (curve or inclination of the body line) etc., the lighting state of the lamp (from the outside) is selected while selecting the positional relationship between the light source and the light guide. Can be adjusted. Thereby, there exists an advantage which the external appearance property of a lamp improves. Moreover, there is an advantage that the degree of freedom regarding the arrangement of the light sources is expanded.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. The constituent elements of this embodiment include those that can be easily replaced by those skilled in the art or those that are substantially the same. In addition, a plurality of modifications described in this embodiment can be arbitrarily combined within a range obvious to those skilled in the art.

  FIG. 1 is a cross-sectional view showing a vehicular lamp according to an embodiment of the present invention. 2 to 9 are a perspective view (FIGS. 2 and 3), a front view (FIG. 4), a sectional view (A) (FIG. 5), and a sectional view (B) shown in FIG. ) And explanatory diagrams (FIGS. 7 to 9). FIG. 10 is an explanatory view showing a modification of the vehicular lamp described in FIG.

[Vehicle lamp]
The vehicular lamp 1 is used, for example, as a stop lamp, turn lamp, fog lamp, or the like of a vehicle. In this embodiment, a configuration in which the vehicular lamp 1 is applied to a stop lamp will be described as an example (see FIG. 1). In FIG. 1, the vehicular lamp 1 according to this embodiment and the existing vehicular lamp 11 are installed in a vehicle 10 as a pair. The relationship between the pair of vehicle lamps 1 and 11 will be described later.

  The vehicular lamp 1 according to this embodiment includes a light source 2, a light guide 3, and a lens 4 (see FIG. 1). The light source 2 includes, for example, a high-pressure metal vapor discharge lamp such as a metal halide lamp, a high-intensity discharge lamp (HID), an LED (light-emitting diode), an incandescent bulb, and the like, and is connected to a power source (not shown) of the vehicle 10. The The light guide 3 has a long structure corresponding to the lamp shape. The light guide 3 is disposed in front of the light source 2 and has a function of guiding light from the light source 2. Specifically, the light source 2 is disposed at one end 3 a in the longitudinal direction of the light guide 3, and light is taken into the light guide 3 from this position. The lens 4 has a function of diffusing (or widening) the light guided by the light guide 3 and irradiating the light to the outside. The lens 4 is disposed on the side of the light guide 3 and on the front side of the lamp (the rear side of the vehicle 10 in the lamp installation state). In such a configuration, when the light source 2 is turned on, the light is guided to the lens 4 side through the light guide 3 and irradiated to the rear of the vehicle 10 through the lens 4.

[Specific examples of light guide]
Moreover, in this vehicle lamp 1, the light guide 3 has the 1st light guide part 31, the light inversion part 32, the 2nd light guide part 33, and the light reflection part 34 (FIGS. 2-6). reference).

  The first light guide portion 31 has a long prismatic shape, and the longitudinal direction of the first light guide portion 31 is arranged from one end 3 a of the light guide 3 toward the other end 3 b. And the entrance side edge part 311 (one edge part 3a of the light guide 3) of this 1st light guide part 31 is orient | assigned to the light source 2 side, and the light of the light source 2 is taken in from this edge part. The first light guide 31 guides light from the light source 2 from one end 3a of the light guide 3 to the other end (end opposite to the side where the light source 2 is disposed) 3b. It has a function.

  The light inverting unit 32 is disposed at the outlet side end 312 of the first light guide 31 (the other end 3b of the light guide 3). The light reversing unit 32 has a function of reversing the traveling direction of the parallel light from the first light guide unit 31. Specifically, the light inverting unit 32 reverses the traveling direction of the parallel light from the first light guide unit 31 by approximately 180 degrees and directs the light guide 3 from the other end 3b to the one end 3a. .

  The second light guide 33 has a long structure, and the longitudinal direction of the second light guide 33 is arranged from the other end 3b of the light guide 3 toward the one end 3a. The second light guide unit 33 receives light from the light reversing unit 32 from an entrance side end 331 (the other end 3b of the light guide 3) to an exit side end 332 (one end of the light guide 3). It has a function to guide towards 3a). The second light guide 33 is arranged so that its longitudinal direction extends along the inner surface (width direction) of the lens 4. Therefore, light is guided along the inner surface of the lens 4 in the second light guide 33. In addition, this 2nd light guide part 33 (or the light guide 3 whole) may be shape | molded by thickness according to the inner surface shape of the lens 4 (illustration omitted).

  The light reflecting portion 34 is integrated with one surface of the second light guide portion 33 (the surface located on the opposite side to the lens 4) so that the reflecting surface faces the lens 4 side in the installed state of the light guide 3. It is formed. The light reflecting portion 34 has a function of reflecting the light in the second light guide portion 33 and emitting it to the outside of the second light guide portion 33.

  In the light guide 3, when the light source 2 is turned on, parallel light enters the first light guide 31 from the entrance-side end 311 of the first light guide 31, and the inside of the first light guide 31 extends in the longitudinal direction. Go straight and enter the light inverting unit 32 (see FIGS. 4 to 6). In the light inverting unit 32, the traveling direction of the parallel light is inverted 180 degrees and directed toward the one end 3 a side of the light guide 3. Then, the parallel light that has passed through the light inverting part 32 enters the second light guide part 33 from the entrance-side end part 331 of the second light guide part 33, and travels straight along the longitudinal direction of the second light guide part 33. Then, the parallel light hits the light reflecting portion 34 in the second light guide portion 33, is emitted from the second light guide portion 33, and is irradiated to the rear of the vehicle 10 through the lens 4.

[effect]
As described above, in the vehicular lamp 1, the parallel light from the light source 2 is guided from one end 3 a of the light guide 3 to the other end 3 b through the first light guide 31, and the light. The traveling direction is reversed 180 degrees by the reversing unit 34 (see FIG. 4). Then, the parallel light is guided from the other end 3b of the light guide 3 toward the one end 3a through the second light guide 33, and is emitted to the outside at the light reflecting portion 34 in the middle thereof. . In such a configuration, although the light source 2 is disposed on the one end 3a side of the light guide 3, the light source 2 is disposed on the other end 3b of the light guide 3 (on the side where the light source 2 is disposed). On the other hand, the lamp emits light as if it is arranged on the opposite side. Therefore, for example, when the installation space of the lamp is limited by the vehicle body shape (body line curve or inclination) of the vehicle 10, the light emission state of the lamp (while selecting the positional relationship between the light source 2 and the light guide 3 ( You can adjust the external appearance). Thereby, there exists an advantage which the external appearance property of a lamp improves. Moreover, there exists an advantage that the freedom degree regarding arrangement | positioning of the light source 2 is expanded.

  Moreover, in this vehicle lamp 1, the 1st light guide part 31 and the 2nd light guide part 33 of the light guide 3 have the substantially uniform thickness t (refer FIG.2, FIG.3 and FIG.6). In such a configuration, for example, there is an advantage that the light guide 3 can be easily formed as compared with a configuration (not illustrated) in which the second light guide portion 33 has a triangular cross section and has an uneven thickness. Moreover, since there is no portion where the thickness of the second light guide 33 (and the first light guide 31) is significantly reduced, there is an advantage that the structural strength of the light guide 3 is ensured. In this embodiment, the thickness t of the first light guide 31 and the second light guide 33 is set to t = 2 [mm] to 3 [mm].

  Further, in the configuration in which the pair of vehicle lamps 1 and 11 are installed in the vehicle 10, for example, the arrangement space of the lamps is limited by the vehicle body shape of the vehicle 10, and the vehicle lamps 1 and 11 are symmetrical to each other. There are cases where they are arranged (see FIG. 1). That is, in the configuration in which the vehicular lamp 1 (11) is composed of the light source 2 (12), the light guide 3 (13) and the lens 4 (14), the positions of the light source 2 (12) and the light guide 3 (13). The relationship may be symmetrical between the vehicle lamps 1 and 11.

  In such a case, it is preferable that one of the vehicle lamps is the vehicle lamp 1 according to this embodiment. In the vehicular lamp 1 according to this embodiment, the light source 2 is opposite to the actual arrangement (one end 3a side) (the other end) with respect to the light guide 3 by the action of the light guide 3 described above. As shown in the part 3b side), the lamp emits light. Therefore, both the vehicle lamps 1 and 11 are arranged as if the arrangement of the light source 2 (12) and the light guide 3 (13) is the same (same side) between the vehicle lamps 1 and 11. Emits light. Thereby, the light emission state of one vehicle lamp 1 and the light emission state of the other vehicle lamp 11 are made uniform, and there is an advantage that the appearance of the lamp is improved. Moreover, since the 1st light guide part 31 and the 2nd light guide part 33 of the light guide 3 have substantially uniform thickness t similarly to said structure, there exists an advantage that shaping | molding of the light guide 3 is easy. Moreover, there is an advantage that the structural strength of the light guide 3 is ensured.

[Additional matter 1]
In addition, in this vehicle lamp 1, it is preferable that the 1st light guide part 31 and the 2nd light guide part 33 have a long shape, and it arrange | positions in parallel along the longitudinal direction (refer FIGS. 2-4). . In such a configuration, the parallel light traveling straight in the longitudinal direction in the first light guide portion 31 and the parallel light traveling straight in the longitudinal direction in the second light guide portion 33 are substantially parallel and opposite directions. For this reason, for example, compared with the structure (illustration omitted) by which a 1st light guide part and a 2nd light guide part are arrange | positioned substantially orthogonally, there exists an advantage that thickness reduction of a lamp is easy. Further, in this configuration, since the lamp has a thin structure, there is an advantage that the lamp can be easily arranged along the vehicle body shape of the vehicle 10.

  Further, from the viewpoint of thinning the lamp, it is preferable that the light source 2 and the long light guide 3 are linearly arranged in the longitudinal direction of the light guide 3 (see FIG. 1). At this time, the light source 2 is disposed at any one end (one end 3a or the other end 3b) of the light guide 3, but is not necessarily at an arbitrary position depending on the relationship with the installation space of the vehicle. It cannot always be arranged. In this respect, in this vehicle lamp 1, even when the light source 2 is arranged at one end 3 a of the light guide 3, it is as if the light source 2 is at the other end 3 b of the light guide 3. So that the lamp emits light. Therefore, even when the light source 2 and the light guide 3 are linearly arranged, there is an advantage that the light emission state of the lamp can be optimized.

[Additional matter 2]
In the vehicular lamp 1, the light reversing unit 32 includes one or a plurality of first inclined surfaces 321 and 322 for guiding parallel light from the first light guide unit 31, and the first inclined surfaces 321 and 322. It is preferable to have a second inclined surface 323 that totally reflects the guided parallel light and enters the light reflecting portion 34 (see FIGS. 3 and 4). That is, the light inverting part 32 has the first inclined surfaces 321 and 322 and the second inclined surface 323, and the parallel light from the first light guide part 31 is inverted by about 180 degrees through these inclined surfaces 321 to 323. The

  Specifically, the light inverting unit 32 includes a pair of first inclined surfaces 321 and 322 and a second inclined surface 323 (see FIG. 7). The first first inclined surface 321 is formed at an angle of approximately 45 degrees with respect to the longitudinal direction of the first light guide portion 31 (the traveling direction of parallel light from the first light guide portion 31). The parallel light from the first light guide part 31 is totally reflected in the second light guide part 33 side and in a substantially vertical direction. The second first inclined surface 322 is orthogonal to the first first inclined surface 321 with its plane directed in the thickness direction of the second light guide 33, and the first first The parallel light reflected by the inclined surface 321 is totally reflected on the second inclined surface 323 side. The second inclined surface 322 is disposed in the vicinity of the entrance-side end portion 331 of the second light guide portion 33, totally reflects the parallel light reflected by the second first inclined surface 322 and enters the light reflecting portion 34. Let The light inverting unit 32 is formed at the other end 3 b of the light guide 3 and connects the outlet side end 312 of the first light guide 31 and the inlet side end 331 of the second light guide 33. is doing.

  In this configuration, the parallel light from the first light guide unit 31 is guided to the second inclined surface 323 via the first inclined surfaces 321 and 322 of the light inverting unit 32, and this parallel light is transmitted by the second inclined surface 323. The light is totally reflected and enters the light reflecting portion 34 of the second light guide portion 33. As a result, the parallel light from the first light guide unit 31 is inverted by approximately 180 degrees and appropriately guided to the light reflecting unit 34. With this configuration, there is an advantage that the parallel light inversion structure is configured with a simple configuration.

  In the above configuration, the relative angle between the second inclined surface 323 and the light reflecting portion 34 is such that the parallel light reflected by the second inclined surface 323 is guided over substantially the entire area of the light reflecting portion 34. Preferably it is defined (see FIG. 8). As a result, parallel light (controlled light) is guided to substantially the entire area of the light reflecting section 34 and the substantially entire area of the light reflecting section 34 is utilized, so that there is an advantage that the light emission state of the lamp is improved.

  Further, in the light reflecting portion 34 of the light guide 3, the parallel light from the light inverting portion 32 incident on the light reflecting portion 34 and the light reflecting portion 34 are reflected in order to use total reflection of light. The angle θ formed with the parallel light is preferably an obtuse angle (see FIG. 9). However, when the positional relationship between the light source 2 and the light guide 3 is restricted, the range of the incident angle of the parallel light with respect to the light reflecting portion 34 is often limited. For this reason, since the angle θ becomes an acute angle and total reflection of light cannot be used, a reflection process (such as an aluminum material vapor deposition process) may be required for the light reflection part. As a result, the productivity of the lamp deteriorates and the manufacturing cost of the lamp may increase.

  In this respect, in this vehicle lamp 1, the angle θ formed by the parallel light reflected by the second inclined surface 323 of the light reversing unit 32 and the parallel light reflected by the light reflecting unit 34 is an obtuse angle. In this way, the relative angle between the second inclined surface 323 of the light inverting part 32 and the light reflecting part 34 is defined (see FIG. 9). Thereby, since the parallel light from the light inverting unit 32 can be totally reflected by the light reflecting unit 34, there is an advantage that it is not necessary to apply a reflection process to the light reflecting unit 34.

  Specifically, the second light guide portion 33 has a uniform thickness t, and the light reflecting portion 34 is formed on the wall surface on one side thereof. The second inclined surface 323 of the light inverting unit 32 is inclined at a predetermined angle with respect to the light reflecting unit 34. As a result, the parallel light reflected by the second inclined surface 323 and incident on the second light guide 33 is incident over substantially the entire surface of the light reflector 34. In addition, an inclination angle with respect to the light inverting unit 32 is defined so that an angle θ formed by the parallel light in the second light guide unit 33 and the reflected light becomes an obtuse angle.

  Moreover, in said structure, it is preferable that the light reflection part 34 of the light guide 3 is comprised by a reflecting prism (refer FIG.3, FIG.4 and FIG.6). That is, in the above configuration, since the parallel light in the second light guide 33 can be totally reflected by the light reflecting portion 34, a reflecting prism can be adopted as the light reflecting portion 34. In such a configuration, since the parallel light (controlled light) in the second light guide unit 33 is mainly reflected by the light reflection unit 34 and irradiated to the outside of the lamp, it is easy to make the light emission state of the lamp uniform. There are advantages. For example, in a configuration in which the light reflecting portion 34 is subjected to reflection processing (evaporation processing such as aluminum material), the light emission state of the lamp may be non-uniform.

  In the above configuration, the second inclined surface 323 is a flat surface (see FIGS. 3 and 4). In such a configuration, since the parallel light incident on the second inclined surface 323 is reflected as parallel light, the controlled light (parallel light) is guided to the light reflecting portion 34 side. Thereby, there is an advantage that the light reflection efficiency at the light reflecting portion 34 is improved and the light emission state of the lamp is improved.

  However, the present invention is not limited to this, and the second inclined surface 323 may be configured by a curved surface (not shown). In such a configuration, although the light reflected by the second inclined surface 323 is not parallel light, it is preferable in that the shape of the second inclined surface 323 can be arbitrarily designed according to the length and thickness t of the light guide 3. .

[Additional matter 3]
Moreover, in this vehicle lamp 1, a pair of light guides 3 and 3 may be arrange | positioned in parallel (refer FIG. 10). For example, a pair of light guides 3 and 3 are arranged in parallel while abutting the second light guides 33 and 33 so that the light reflecting parts 34 and 34 are adjacent to each other in the same plane, and are integrally formed. Is done. In this embodiment, since the light guide 3 has a substantially L-shaped cross section due to the first light guide 31 and the second light guide 33, the light guide is formed by arranging a pair of light guides 3 and 3. The body has a substantially U-shaped cross section. In this configuration, since the light guide has a substantially box-shaped cross section (substantially U-shaped cross section), the light guide 3 having a single and substantially L-shaped cross section is compared with a configuration in which the light guide 3 is installed in the vehicle 10 or the lamp. Thus, there is an advantage that the light guide fixing structure is simplified.

  In the above configuration, light may be supplied from the single light source 2 to the light guides 3 and 3, or the light sources 2 and 2 may be installed for the light guides 3 and 3, respectively. Good (not shown).

  As described above, the vehicular lamp according to the present invention is useful in that the appearance of the lamp can be improved.

It is sectional drawing which shows the vehicle lamp concerning the Example of this invention. It is a perspective view which shows the vehicle lamp described in FIG. It is a perspective view which shows the vehicle lamp described in FIG. It is a front view which shows the vehicle lamp described in FIG. It is A sectional view which shows the vehicle lamp described in FIG. It is B sectional drawing which shows the vehicle lamp described in FIG. It is action explanatory drawing which shows the vehicle lamp described in FIG. It is action explanatory drawing which shows the vehicle lamp described in FIG. It is action explanatory drawing which shows the vehicle lamp described in FIG. It is explanatory drawing which shows the modification of the vehicle lamp described in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Light source 3 Light guide 3a One end 3b The other end 4 Lens 10 Vehicle 11 Vehicle lamp 31 1st light guide part 311 Inlet side edge 312 Outlet side edge 32 Light inversion part 33 1st Two light guide portions 34 Light inverting portion 321 First first inclined surface 322 Second first inclined surface 323 Second inclined surface 331 Entrance side end 332 Exit side end

Claims (8)

A vehicular lamp including a light source, a light guide that guides light of the light source, and a lens that diffuses light that has passed through the light guide,
The light guide has a first light guide that guides the parallel light from the light source from one end of the light guide to the other, and a traveling direction of the parallel light from the first light guide. A light reversing unit for reversing, a second light guiding unit for guiding parallel light from the light reversing unit toward the one end from the other end of the light guide, and parallel light in the second light guiding unit And a light reflecting portion that emits light to the outside of the second light guide portion, and the first light guide portion and the second light guide portion have a substantially uniform thickness. Vehicle light fixture. A pair of light sources, a light guide that guides light from the light sources, and a lens that diffuses the light that has passed through the light guides, and the light sources with respect to the light guides are arranged symmetrically with respect to each other. A vehicular lamp,
From the first light guide, the light guide of one of the vehicle lamps guides the parallel light from the light source from one end of the light guide to the other end. A light reversing unit that reverses the traveling direction of the parallel light, a second light guiding unit that guides the parallel light from the light reversing unit toward the one end from the other end of the light guide, and the first A light reflecting portion that reflects parallel light in the two light guide portions and emits the light to the outside of the second light guide portion, and the first light guide portion and the second light guide portion are substantially uniform in thickness A vehicle lighting device characterized by comprising:   The vehicular lamp according to claim 1 or 2, wherein the first light guide section and the second light guide section have a long shape and are arranged in parallel with the longitudinal direction aligned.   The light inverting unit reflects one or a plurality of first inclined surfaces that guide parallel light from the first light guide unit, and the parallel light guided by the first inclined surfaces to be incident on the light reflecting unit. The vehicular lamp according to any one of claims 1 to 3, further comprising a second inclined surface.   The relative angle between the second inclined surface and the light reflecting portion is defined such that light reflected by the second inclined surface is guided over substantially the entire area of the light reflecting portion. Vehicle lamps.   The relative angle between the second inclined surface and the light reflecting portion is an angle θ between the light reflected by the second inclined surface and incident on the light reflecting portion and the light reflected by the light reflecting portion. The vehicular lamp according to claim 4 or 5, which is defined to have an obtuse angle.   The vehicular lamp according to claim 6, wherein the light reflecting portion is configured by a reflecting prism.   The vehicular lamp according to claim 1, wherein the pair of light guides are arranged in parallel.

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